I have successfully installed SheepShaver, and I installed Mac OS 9.0.4 from a Mac OS 9.toast image I was able to download from the Internet. After getting everything installed, I removed the virtual CD from the machine and rebooted. When I was able to see the desktop, I went to check on the sound. I opened the Sound control panel, and under Output, I selected Built-in. I clicked on the Mute check box, but the menu bar flashed and the check mark from the Mute box was automatically removed. I clicked on Alert Sounds and clicked on the various sounds (SimpleBeep, Sosumi, Submarine, etc.) to hear what they would sound like, but each time, the menu bar flashed and no sound was made. I tried changing the Alert Volume (which defaulted to max volume), but whenever I moved it to the left, no matter how far, the menu bar flashed and no sound was made.

I had read somewhere that you should go to the Extensions folder and delete the Apple Sound Extension. I deleted it, emptied the trash, and rebooted. No effect.

Did I miss a step somewhere in setup? Is there something different that I need to do that I am not already doing? My host system is MacOS Sierra 10.12.6. This is the only system I have tried this on, and I do not have access to any other OS to try. Any help anyone can give would be greatly appreciated. Thank you.

I do not have High Sierra, just regular Sierra (10.12.6), so that does not apply. I'm using a Mac mini (Late 2014) with a 2.6 GHz Intel Core i5 processor. If there are any other details I need to provide about my Mac, let me know what you need and I will find that information for you.

I did actually select Built-in. Didn't have any effect.

Yes, after I had deleted the extension, I forgot what it was called. Apple Audio Extension is the one that I deleted.

I checked other forums and even YouTube videos to see if anybody else has had this problem or other solutions to try, but nobody has suggested doing anything different than visiting the Sound control panel. I'm really at a loss as to what I can do to get sound.

The OS9.img file did come from redundantrobot. I have since downloaded disk images from MacintoshGarden.org. I do not know what the .hfv file is, only that my first iteration of using Sheepshaver created it. I do not think that it is even being used any longer. Is it safe to delete it?

At this point, I have downloaded disk images of 8.5, 8.6, 9.0, and 9.0.4. None of them have sound. The Monitors & Sound control panel in 8.5 and 8.6 do not have anything listed under Sound Output. There isn't a way to assign anything to it either. I double-checked the .sheepshaver_prefs file, and it does indeed have a line that says "nosound false", so that's not where the problem lies. Somebody had suggested to me to delete a file called .sheepshaver_nvram, but that file does not exist in /Users/Scott (my home directory). Could that missing file be the cause of the problem? How is that file created? What is its purpose?

More suggestions to try, please. Maybe these fits of non-progress are helpful in some way.

The OS9.img file did come from redundantrobot. I have since downloaded disk images from MacintoshGarden.org. I do not know what the .hfv file is, only that my first iteration of using Sheepshaver created it. I do not think that it is even being used any longer. Is it safe to delete it?

At this point, I have downloaded disk images of 8.5, 8.6, 9.0, and 9.0.4. None of them have sound. The Monitors & Sound control panel in 8.5 and 8.6 do not have anything listed under Sound Output. There isn't a way to assign anything to it either. I double-checked the .sheepshaver_prefs file, and it does indeed have a line that says "nosound false", so that's not where the problem lies. Somebody had suggested to me to delete a file called .sheepshaver_nvram, but that file does not exist in /Users/Scott (my home directory). Could that missing file be the cause of the problem? How is that file created? What is its purpose?

More suggestions to try, please. Maybe these fits of non-progress are helpful in some way.

hfv files are the same as img or dmg files; they're the virtual disk that the guest OS is saved on.

the .sheepshaver_nvram file is the NVRAM (non-volatile RAM) file that represents the battery-backed RAM of a real Macintosh computer. It stores the date/time, hardware configuration, video settings, etc. between reboots. This sometimes became corrupt on real macs, and sometimes does in the emulator too; deleting it should cause a new version to be generated on next boot, and you may lose a few settings such as key repeat rate and menu flashing on select.

I will give trying to download a new ROM file a try and see if that helps anything. So far, I'm still stuck in the same place as before. However, I have recently upgraded my host Mac to High Sierra 10.13. I don't know if that makes a difference, but still it might be worth pointing out, in case anybody else is having the same problem I am.

A quick reminder where I can download the ROM file from, please? It has been a while since I have needed the download link.

The Mac ROM is not an issue here.If you want to replace it anyway, please look at the SheepShaver DL pagefor Windows and look for "To get started, always download this:"And yes, I know you are using macOS.

For the sound issue, be sure to repeat the steps Ronald suggested.Install a pristine MacOS 8.5 to 9.0.4 on an e.g. empty 2GB volume and enable sound via the Control Panel.Also make sure that sound is enabled in the SheepShaver GUI (or prefs file).The flashing menu bar does tell that sound on the Mac side is not configured.This "no-sound" setting is stored in the Mac NVRAM and is valid for all MacOS you are booting with SheepShaver.